Phosphor based illumination system having a plurality of light guides and an interference reflector
US7204631B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2004 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Jul 12, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0066
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination system including a light source, a light guide including an output surface, emissive material positioned to receive light from the output surface of the light guide, and an interference reflector positioned such that the emissive material is between the output surface of the light guide and the interference reflector is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The interference reflector substantially transmits light having the second optical characteristic and substantially reflects light having the first optical characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.